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414 条记录 (耗时 0.018 秒)

    High yield process for preparing 3,3',5,5'-tetraalkyl-4,4'-biphenol
    72.
    发明公开
    High yield process for preparing 3,3',5,5'-tetraalkyl-4,4'-biphenol 无效
    Verfahren zur Herstellung von 3,3'，5,5'-四烷基-4,4'-二苯酚咪唑Ausbeute。

    公开(公告)号：EP0131897A1

    公开(公告)日：1985-01-23

    申请号：EP84108090.6

    申请日：1984-07-10

    申请人： ICI AMERICAS INC.

    发明人： Kruse, Walter Max ,  Stephen, John Fergus

    IPC分类号： C07C39/15 ,  C07C37/07 ,  C07C37/50

    CPC分类号： C07C37/07 ,  C07C37/50 ,  C07C39/15

    摘要： 4,4'- biphenol can be prepared by dealkylation of the hydrogenation product of a diphenoquinone of the formula:
    wherein R is a tertiary alkyl group of 4-8 carbon atoms. Additional inventive features includes hydrogenation of an alkylated diphenoquinone in the presence of a heterogeneous catalyst and an alkyl benzene solvent and the dealkylation of a 3,3',5,5' diphenol by heating with an acid catalyst in an at least 4-fold molar excess of an alkyl benzene.

    摘要翻译： 4分钟 - 联苯酚可以通过下式的二苯醌的氢化产物的脱烷基化制备：其中R是4-8个碳原子的叔烷基。 另外的发明特征包括在非均相催化剂和烷基苯溶剂的存在下烷基化联苯醌的氢化，并通过用至少4倍摩尔量的酸催化剂加热3,3分钟5,5分钟二酚的脱烷基化 过量的烷基苯。

    Crossed beam high frequency anti-theft system
    77.
    发明公开
    Crossed beam high frequency anti-theft system 失效
    Diebstahlsicherungssystem mit sich kreuzendemHochfrequenzbündel。

    公开(公告)号：EP0091581A2

    公开(公告)日：1983-10-19

    申请号：EP83102895.6

    申请日：1983-03-23

    申请人： ICI AMERICAS INC.

    发明人： Fancher, Philip Daniel

    IPC分类号： G08B13/24

    CPC分类号： G08B13/2422 ,  G01V15/00 ,  G08B13/2471

    摘要： An article surveillance system employs a label or tag containing a non-linear impedance element, such as a semi-conductor diode, connected to a metal antenna loop configured to pick up two distinct radio frequency transmissions displaced on either side of a selected center frequency. The non-linear impedance element connects opposing sides of a closed loop section at one end of the antenna to form a tuned tank circuit having a resonant frequency twice that of the selected center frequency. A first transmitter generates a tone modulated radio frequency displaced on one side of the center frequency, and a second transmitter generates a continuous wave radio frequency displaced from the center frequency on the other side. Both transmitter signals are fed separately to respective radiating antennae located adjacent to a surveillance area. The antennae are chosen to produce circularly polarized transmission of both frequencies within the surveillance area. The two different frequencies picked up by the transponder antenna are mixed by the non-linear impedance causing the tank circuit to resonate at a single higher frequency equal to their sum, which is double the center frequency; that resonant frequency is reradiated to be picked up by a receiver antenna or antennae suitably placed with respect to the surveillance zone to be detected by a very narrow band receiver responsive to the sum frequency. The modulating tone signal is derived from the received signal to produce a gradually increasing charge that is compared against a preselected threshold level to trigger an alarm for a fixed interval only when the detected signal is of a sufficient strength and duration.

    摘要翻译： 物品监视系统采用包含连接到金属天线回路的非线性阻抗元件（例如半导体二极管）的标签或标签，该金属天线回路被配置为拾取在选定的中心频率的任一侧上移位的两个不同的射频传输。 非线性阻抗元件连接在天线的一端的闭环部分的相对侧，以形成谐振频率为所选中心频率的谐振频率的两倍的调谐谐振电路。 第一发射机产生在中心频率的一侧上移位的音调调制的射频，而第二发射机产生从另一侧偏离中心频率的连续波无线电频率。 两个发射机信号分别馈送到位于监视区域附近的各个辐射天线。 选择天线以在监视区域内产生两个频率的圆偏振透射。 由应答器天线拾取的两个不同频率被非线性阻抗混合，导致音箱电路以等于它们的总和的单个较高频率谐振，这是其中心频率的两倍; 该谐振频率被再辐射以由相应于监视区适当放置的接收机天线或天线拾取，以由要求频率的非常窄的频带接收机检测。 调制音信号从接收到的信号导出，以产生逐渐增加的电荷，其与预选的阈值电平进行比较，以仅在检测到的信号具有足够的强度和持续时间时触发固定间隔的警报。

    Method for concentrating mannose in aqueous glucose solutions
    79.
    发明公开
    Method for concentrating mannose in aqueous glucose solutions 失效
    Verfahren zur Konzentrierung von Mannose inwässrigenGlukoselösungen。

    公开(公告)号：EP0074713A1

    公开(公告)日：1983-03-23

    申请号：EP82304164.5

    申请日：1982-08-06

    申请人： ICI AMERICAS INC.

    发明人： Kruse, Walter Frank ,  de Berardinis, Albert Joseph

    IPC分类号： C13K13/00 ,  C07C29/10

    CPC分类号： C07C31/26 ,  C13K13/00

    摘要： Glucose is separated from an aqueous solution containing glucose and mannose by saturating said solution with sodium halide to form an insoluble sodium halide/glucose hydrate adduct which is precipitated. The mannose rich solutions are subsequently demineralized and reduced by hydrogenation to produce mannitol/sorbitol concentrates wherein the ratio of mannitol to sorbitol is at least 1/1.

    摘要翻译： 通过用卤化钠饱和所述溶液将葡萄糖从含有葡萄糖和甘露糖的水溶液中分离，以形成沉淀的不溶性卤化钠/葡萄糖水合物加合物。 富含甘露糖的溶液随后通过氢化脱矿质并还原，产生甘露醇/山梨糖醇浓缩物，其中甘露醇与山梨糖醇的比例至少为1/1。